Product include: 5 x tension springs304 stainless steel material, silver tone, dual hook.Tension spring can be used in many occasions, such as door, window, etc.The expansion springs give resistance to a pull force and become dependent under load, applications include balance scales, garage doors, washing machines and applications which require various types of tensioning devices.Flexible springs are sturdy and springy for the right amount of tension and compression.Available Type: Type 1, Type